Injector



J. JENKS.

(Model.)

INJBCTOB..

Patented Mar. 24, 1885.

[7l/winter Jwnwwffaa/f iTn STATns PiTsNT @Trina JAMES JENKS, OF DETROIT, MICHIGAN.

im sores. l

iP-CFTATIN forming part of Letters Patent No. 3141.533. dated March. 24, 1885.

Application sled June 4, 18st (Model.)

Z'o @ZZ whom t may concern:

Beit knownthat I, JAMns JENKs, of Detroit, in the county of Vayue and State of Michigan, have invented new and useful Improvements in Injectors; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification. v

This invention relates to certain new and useful improvements in the construction and operation of double injectors, or that class of devices wherein are combined a lifting-injector device to draw water from a source of supply lower than the plane of the implement, and a forcing-ejector adapted to take the water delivered from the lifting-injector and force the same into a steam-boiler, from which steam is taken as the initiating` and propelling force.

The invention consists in the peculiar con* struction of parts and their combinations, as more fully hereinafter described.

Figure l is a vertical central longitudinal section. F ig. 2 is an enlarged cross-section on the lines X Xin Fig. l. Fig. 3 is a sectional plan of the coupling-rods by means of which the steam and overflow valves are connected and operated.

In the accompanying drawings, which form a part of this specification, A represents a suitable case, in which Bis the steam-inlet, adapted to be connected with the steamspace of the boiler by a suitable pipe, in which it is usual to arrange a valve. This inlet leads into a steam-chamber, G, at the bottom of which is secured a plug, D, in which is formed a conically-shaped jet or passage, E, for the steam, through which the only communication is had between the steam-chamber C and the water-chamber F, which at its lower end is provided with a water-inlet opening, G, adapted to be connected with the suction-pipe which leads to the source of water-supply.

H is a combining tube, formed of two frustums of cones screwed into the lower part of the chamber F, and through this combiningtube the only communication is had between the water-chamber F and the water-chamber I, in which there is a passage, J, leading into the overflow-pipe K.

To close or disclose the opening J, a valve, L, is employed, secured at the end of a sup plemental stem, M, which has a reciprocating motion within the bore of the stem N proper, a coil-spring, 0, being also inserted behind such supplemental stem M, as shown.

P is a steam jet or nozzle secured in the wall which separates the steamchamber C and the water-chamber I and affords communication between such chambers.

R is a cylinder in said steam-chamber, secured to the end of the nozzle or jet l?, and its sides or walls are provided with longitudinal perforations c. Vithin this cylinder travels the pistons, secured at the end of the rod or stein T, the opposite end of which projects outside the instrument, as shown, through a proper packing-nut, U, the outer end of such stem T being connected to the lever V, the opposite end of which lever is sleeved upon the stem W in such manner as to travel with the movement of such last-named stem, which is provided with a leading-thread, b, which engages with-a similar thread, c, in the interior ofthe socket X, which is cast upon or secured to the shell A. This stem YV is provided with a handle, Y, for rotating it.

To the sleeve Z of the lever V there are secured-one passing along either side of the implement-coupling-rods A', which are connected at their opposite ends in any suitable manner to the projecting end of the stem N, so that the movement ofthe stem W in retraction or projection causes both the stems T and N to move simultaneously, but iu opposite directions.

B' is a combining-tube secured in the wall which separates the water-chamber l from a water-chamber, 0'; and D' is a delivery-tube which connects with the feed-water pipe E', which by an intervening section of pipe is connected with the waterspace to the boiler.

through the openingf, which is closed or disclosed by the operation of the valve F'.

In the top of the chamber C is an orifice, d, affording communication between such waterchamber and a passage, G', passing down around one side of the chamber C', and discharging into the overflow-pipe K. This oririce d is closed or disclosed, as occasion may require, by the valve H', secured upon lthe end of the stem l', which has a vertical motion in the door e of the cap J', which is secured above the orifice d.

The delivery-tube D is cast integral with the cylinder K, the opposite end of which is interiorly threaded, as at h, to engage with a similar thread upon the combining-tube B, whereby the two tubes B and D are held in their relative positions to each other, with a water-supply, is ready for operation by admitting steam into the chamber C. The valve S being seated, to prevent the passage of such steam through the jet P, and the overflowvalve L being open, the steam passes through thejet E into the chamber F, where, by conf densation, a vacuum is created, it is iminedi-l ately filled through the suction-pipe with water, and such Water overflowing the upper end ofthe combining-tube H, is forced by the steam passing through the jet E into the chamber'I, carrying with it any air that might have been in the implement at these points. This air is forced out through the opening J, and when water appears at this opening the movement of the handle Y in the right direction closes the valve L upon such opening, at the same time withdrawing the piston S from its seat, but not yet disclosing the apertures in the sides of the cylinder B, so that steam can be admitted to such cylinder. This allows the entire chamber I to become iilled with water, and by continuing the motion of the handleYin the same direction the stem N compresses the spring O, holding the valve L still in position,and still further withdraws the piston,which allows the steam to enter through the openings a in the cylinder R, and such steam now passing through the jet P meets thewater in the chamber I and forces it through the combining-tube B into the chamber C. As will be noticed, the combiningtube B and the dischargetube D are two separate tubes with a space between their adjacent ends. At this time the' valve F is closed. In order to establish a perfect current, the air which has been forced into the chamber C must be given an outlet. Under the pressure of steam entering through P the Water fills the chamber C', such pressure overcoming the valve I-I, raising the same, thereby disclosing the passage G', through which-the air escapes to the overiiow-pipe K, and the exclusion of the air is shown by water passing through the same outlet. As soon as this is established, the valve F is opened automatically, which allows the current to flow in a direct line, under the pressure of the steam,

lthrough P, through the combining-tube B and delivery-tube D', to the exit or feed pipe E', and this relieves theV pressure upon the valve H', which now closes by its own gravity,

and the result is a current established to the boiler, the implement now drawing the water and forcing it into the boiler without difiil culty.

In this application I make no claim to the piston Workingl in the perforated cylinder and shutting off the steam therefrom before it reaches its seat; nor to having said pistonl control the admission of steam to the jet in the force side; nor to the combination of the steam-chamber, perforated cylinder, and pis ton-valve, as all these features are clearly set forth and claimed in a separate application, filed of even date herewith, and bearing the Serial No. 133,779..

I make no claim to the device for simultane ously 'operating the valves Land S, (which consists of the stem W, yoke V, and rods A,) as I believe said device to be the invention of Thomas J. Hart, whose application for a pat ent was filed June 4, 1884, Serial No. 133, 763.

That I claim as my invention isl. The combination, in an injector or eject-r or, of the steam-jet, combining-tube, and deliverytube,situated in relation to each other, substantially as described, with a piston controlling the admission of steam to the jet, tightly fitting in and having a reciprocating motion within a perforated cylinder, and a valve upon a yielding stem controlling the overiiow-passage, substantially as and for the purposes specified.

`2. In an ejector having an injector inclosed in the same shell, and adapted to draw water from a plane below that of the implement, and deliver the same to said injector, a per forated cylinder in the steam-chamber having a reciprocating piston tightly fitting therein, a steam-jet, a combiningtube and a deliverytube, such cylinder, steam-jet, and tubes being on the same axial line,in combination with a Water-chamber surrounding the adjacent ends of said tubes, having an opening in its top communicating with an overlioW-passage, such opening being controlled by a valve which is opened by internal pressure and closed by gravity, substantially as specied.

3. In a steam-injector provided with inlet,-

IOO

IIO

exit, and overflow passages, the chambers I and C', the latter independently formed within the body of the casing, and surrounding the combining and delivery tubes thereof, passage G', Wholly within the said casing, and the overflow-pipe K, communicating with the chambers I and C, in combination with the valve L, mounted on a yielding stem, and regulating the exit from the chamber I to the overflow-pipe K, and the valve I, automatically regulating the overliow from the chamber C to the overiiow-pipe K in the rear of and independently of the valve L, substantially as shown and described.

JAMES JENKS. 

